Warmest sea in South America in May

947 coastal locations in South America ranked by their typical May sea temperature. Region-wide average in May: 20.3°C. The top of the list is where to find the warmest swimming this month.

Warmest in May

Costa de Oro

30.1°C May mean in Uruguay

Regional May average

20.3°C

across all 947 coastal locations in South America

Vs annual mean

-0.1°C

below the year-round regional average

What the South America sea feels like in May

Water at this temperature is very pleasant to swim in. If you tend to wear a wetsuit when swimming, you might consider removing it now to avoid the body overheating.

South America monthly average 18.1°C to 22.7°C

Warmest month February 22.7°C
Coldest month August 18.1°C
Annual mean 20.4°C
Months above 20°C 7 of 12

Where May fits in the year

May sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve South America month rankings:

South America sea temperature map (live)

The map shows today's latest reading at every South America location. The list below is based on the typical May mean, useful for trip planning weeks or months ahead.

Zoom in to see individual locations. Click a pin for water temperatures. View list →

°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 warmest South America locations in May

Sorted by the typical May mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

#	Location	Country	May mean
1	Costa de Oro	Uruguay	30.1°C
2	Covenas	Colombia	29.9°C
3	Tolu	Colombia	29.9°C
4	Porto de Mosqueiro Pará	Brazil	29.5°C
5	Tintipan Island	Colombia	29.5°C
6	Barcarena Para	Brazil	29.4°C
7	Cameta Para	Brazil	29.4°C
8	Limoeiro do Ajuru Para	Brazil	29.4°C
9	Oeiras do Para Para	Brazil	29.4°C
10	Belem Para	Brazil	29.4°C
11	Ilha de Santana State of Maranhão	Brazil	29.4°C
12	Baru Island	Colombia	29.4°C
13	Ananindeua Para	Brazil	29.4°C
14	Luis Correla Piauí	Brazil	29.4°C
15	Itaqui Maranhão	Brazil	29.4°C
16	Ponta da Madeira Maranhão	Brazil	29.4°C
17	Arboletes	Colombia	29.4°C
18	Necocli	Colombia	29.3°C
19	Turbo	Colombia	29.3°C
20	Rosario Islands	Colombia	29.3°C
21	Ilha De Colares Pará	Brazil	29.3°C
22	Soure Para	Brazil	29.2°C
23	Ilha dos Guaras State of Pará	Brazil	29.2°C
24	Acandi	Colombia	29.2°C
25	Capurgana	Colombia	29.2°C

Show 25 more ▸

26	Vigia Para	Brazil	29.2°C
27	Sao Jose de Ribamar Maranhao	Brazil	29.1°C
28	Sao Luis Maranhao	Brazil	29.1°C
29	Ilha Do Brigue State of Amapá	Brazil	29.1°C
30	Sao Caetano de Odivelas Para	Brazil	29.1°C
31	Alcantara Maranhao	Brazil	29.1°C
32	Tutoia Maranhao	Brazil	29.1°C
33	Bahia el Tablazo Zulia	Venezuela	29.1°C
34	El Toro Zulia	Venezuela	29.1°C
35	Punta de Palmas Zulia	Venezuela	29.1°C
36	Marapanim Para	Brazil	29.1°C
37	Areia Branca (Salineiro Terminal) State of Sergipe	Brazil	29.0°C
38	Luis Correia Piaui	Brazil	29.0°C
39	Salinopolis Para	Brazil	29.0°C
40	Macapa Amapa	Brazil	29.0°C
41	Santana Amapa	Brazil	29.0°C
42	Malecon Zulia	Venezuela	29.0°C
43	Pecem Ceara	Brazil	29.0°C
44	Sao Joao de Pirabas Para	Brazil	29.0°C
45	Cartagena	Colombia	29.0°C
46	La Boquilla	Colombia	29.0°C
47	Cabimas	Venezuela	29.0°C
48	El Toro	Venezuela	29.0°C
49	Maracaibo	Venezuela	29.0°C
50	Tia Juana	Venezuela	29.0°C

Coldest 10 in South America in May

Same data the other way. Helpful if you want to know which South America coasts to avoid for swimming in May.

#	Location	Country	May mean
1	Ronne Ice Shelf Argentine Antarctica	Argentina	-1.8°C
2	Weddell Sea Argentine Antarctica	Argentina	-1.8°C
3	Signy Island Argentine Antarctica	Argentina	-0.7°C
4	Scotia Bay Argentine Antarctica	Argentina	-0.6°C
5	Port Stanley-A East Falkland	Falkland Islands	6.8°C
6	Punta Delgada Magallanes y la Antártica Chilena	Chile	6.9°C
7	Bahía San Sebastián Tierra del Fuego	Argentina	7.0°C
8	Tierra del Fuego	Chile	7.0°C
9	Puerto Vancouver Tierra del Fuego Province	Argentina	7.1°C
10	Caleta Brent Tierra del Fuego Province	Argentina	7.2°C